| Project/Area Number |
63044092
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Osaka University |
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Principal Investigator |
OKADA Hiromi Faculty of Engineering, Osaka University, 工学部, 助教授 (10093387)
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| Co-Investigator(Kenkyū-buntansha) |
JAMES F.Kuro マサチューセッツ大学, 計算機科学系, 助教授
OHTSUKI Kazuhiro Faculty of Liberal Art, Kobe University, 教養部, 助手 (10185324)
KUROSE James F. Dept. of Computer and Information Science, University of Massachusetts
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1989: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1988: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Access Control Scheme / Ring Networks / Token Passing Control / High-speed Optical Ring / Multi-media Communication / High-speed Packet Switching / Computer Simulation |
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| Research Abstract |
The objective of this project is to develop effective access control / switching scheme for high speed optical fiber ring networks. This project has proposed a new control system named Resolvable-Contention Ring or simply ReC-ring. ReC-ring is based on Contention-ring, which is an integrated contention/virtual token-passing access control scheme, and introduces a resolution function of packet collision in the ring without serious hardware/software overhead. The project has constructed a specialized computer simulator for analyzing high-speed ring networks in detail and shown the effectiveness and validity of ReC-ring over other representative access control schemes, like Token-ring, Slotted-ring, and C-ring in wide range of ring network environment, quantitatively. Further, on the base of access control technology for high-speed optical ring networks, this project also has presented a new high-speed packet switching architecture by introducing multiple optical ring networks which are connected by packet overflow buffer and link. The project has shown the validity of this new architecture especially for multiple virtual links situation of multimedia data communications by both computer simulation and mathematical analysis.
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